Serviços (Prótese Fixa)

In-Ceram® Zirconia

Quick Facts:

  • Recommended for posterior bridges (with pontic spans up to 14 mm) and single posterior crowns.
  • Clinically tested in posterior bridge situations for over seven years (achieved 97.5% clinical success rate).
  • Extremely strong (700 MPa) oxide framework. Two to three times the fracture resistance and 1.4 times the strength of In-Ceram® Alumina.
  • Can be cemented conventionally or luted with low expanding resins (i.e., resin cement).
  • Matched to 26 shade 3D-Master™ Shade System (adjunctive 3 shade guide for "super white" restorations also available).


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Zirconia 3-unit posterior bridge and 2 single molar crowns.

Product Profile:

Now you can offer your patients all-ceramic posterior bridges with confidence. Zirconia, the latest addition to Vita's In-Ceram® product line, has been subjected to extensive testing in posterior bridge situations over seven years. And, it achieved a 97.5% clinical success rate over that time period!

Superior Strength

With two to three times the fracture resistance and 1.4 times the strength, Zirconia has considerably improved mechanical characteristics when compared to In-Ceram® Alumina. Recommended for bridges with pontic spans up to 14 mm, Zirconia crowns and bridges can be cemented conventionally or luted with low expanding resins.

Matched to 3D-Master™ Shade System

Image description In-Ceram® Zirconia restorations can be accurately matched to the Vitapan® Classical Lumin Vacuum or 3D-Master™ Shade Systems. Automatically improving the communication between the dentist and dental technician, the 3D-Master™ Shade System sets new standards in color selection, color communication and color reproduction through a three-dimensional model. Ensuring absolutely precise shade selection, the system covers 26 "natural" shades arranged in evenly spaced groups by value (lightness), chroma (color saturation) and hue an equal distribution from each other. Shade determination can now be carried out according to systematic criteria. This allows the technician to work with exact parameters in translating the color information. A new adjunctive bleached (3 shade) guide for "super white" restorations is also available.

Chaiside Preparation


Recommended Shade Guides:

Vita Lumin or Vita 3D-Master Shade Guide.

  1. Anesthetize area.
  2. Take preliminary impression.
  3. Remove all defective amalgams and caries.
  4. Select gingival, body and incisal shades of teeth to be restored (NOTE: Best accomplished after old dark alloy is gone).
  5. Prepare teeth as follows:
    • reduce facial, lingual and proximal surfaces a minimum of 1.2 mm (1.5 mm is the minimum necessary for esthetic areas, i.e., the buccal aspect of the preparation).
    • allow for no more than 2.5 mm of occlusal reduction.
    • all line angles should be smooth and rounded.
    • sharp transitions, inner angles, undercuts or feather edges should be avoided.
    • insure there is an adequate path of insertion.
    • all gingival margins should be butt shoulder with rounded axio-cervical line angle. A chamfer preparation is possible as long as a mechanical support is guaranteed, particularly when used with reduced tooth structure (e.g., after repeated crowning).
    • flat chamfers, shoulder preparations with angles greater than 100º, tangential preparations and bevels of the preparation limit are contraindicated.
  6. It is necessary to place a proximal box in the preparations adjacent to the edentulous space, to allow bulking of the framework at the axio/occlusal line angle.
  7. Use the preliminary impression to fabricate a well-fitting custom temporary restoration.
  8. Take final impression with Panasil vinyl polysiloxane or similar impression material.
  9. Secure an adequate interocclusal record.
  10. Cement temporary restoration.
  11. Prepare detailed lab prescription with details of nature of opposing teeth, age of patient, surface occlusal stain required, etc.









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Ideal 3-Unit Anterior Bridge Preparation

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Ideal Posterior Preparation (Full Circumferential Shoulder 90° - 120°)

RECOMMENDED PREPARATION LIMITS:

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Shoulder with rounded axio-cervical line angle, uniform circular ablation
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Chamfer preparation (with reduced mechanical support of the crown). Particularly used with reduced substance (e.g. after repeated crowning)


Contraindicated: flat chamfers, shoulder preparations with angles >100°, tangential preparations and bevels of the preparation limit

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Common Preparation Errors:

  1. Insufficiently defined and finished preparation margins.
    • uneven preparation limit (so-called gutter preparation, vertical unevenness)
    • irregular marginal reduction of layers (horizontal unevenness)
    • wrong shape of preparation limit
    • unnecessarily deep subgingival preparation
    • preparation in the root dentin
  2. Poorly controlled tooth reduction
    • not following proper reduction guidelines, therefore not allowing sufficient porcelain for ceramic vitality.
    • insufficient reduction at the palatal side of the upper anterior teeth (malfunctional occlusion)
    • excessive taper